package com.pos.toolbox.file;

import android.annotation.TargetApi;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.media.MediaMetadataRetriever;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Created by Jay Rambhia on 11/2/2015.
 */
public class BitmapUtils {
	/**
	 * 获取视频封面bitmap
	 */
	public static Bitmap getVideoThumbnail(String filePath) {
		Bitmap bitmap = null;
		MediaMetadataRetriever retriever = new MediaMetadataRetriever();
		try {
			retriever.setDataSource(filePath);
			bitmap = retriever.getFrameAtTime();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (RuntimeException e) {
			e.printStackTrace();
		} finally {
			try {
				retriever.release();
			} catch (RuntimeException e) {
				e.printStackTrace();
			}
		}
		return bitmap;
	}

	/**
	 * 保存文件
	 * 
	 * @param bitmap
	 *            即将保存为文件的bitmap
	 * @param fileName
	 *            文件名
	 */
	public static void saveFile(Bitmap bitmap, String path) {
		File jpgFile = new File(path);
		try {
			FileOutputStream outputStream = new FileOutputStream(jpgFile);
			bitmap.compress(Bitmap.CompressFormat.JPEG, 30, outputStream);
			IOUtil.closeStream(outputStream);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 读取图片的旋转的角度
	 *
	 * @param path
	 *            图片绝对路径
	 * @return 图片的旋转角度
	 */
	public static int getBitmapDegree(String path) {
		int degree = 0;
		try {
			// 从指定路径下读取图片，并获取其EXIF信息
			ExifInterface exifInterface = new ExifInterface(path);
			// 获取图片的旋转信息
			int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,
					ExifInterface.ORIENTATION_NORMAL);
			switch (orientation) {
			case ExifInterface.ORIENTATION_ROTATE_90:
				degree = 90;
				break;
			case ExifInterface.ORIENTATION_ROTATE_180:
				degree = 180;
				break;
			case ExifInterface.ORIENTATION_ROTATE_270:
				degree = 270;
				break;
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return degree;
	}

	/**
	 * 将图片按照某个角度进行旋转
	 *
	 * @param bm
	 *            需要旋转的图片
	 * @param degree
	 *            旋转角度
	 * @return 旋转后的图片
	 */
	public static Bitmap rotateBitmapByDegree(Bitmap bm, int degree) {
		Bitmap returnBm = null;

		// 根据旋转角度，生成旋转矩阵
		Matrix matrix = new Matrix();
		matrix.postRotate(degree);
		try {
			// 将原始图片按照旋转矩阵进行旋转，并得到新的图片
			returnBm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true);
		} catch (OutOfMemoryError e) {
		}
		if (returnBm == null) {
			returnBm = bm;
		}
		if (bm != returnBm) {
			bm.recycle();
		}
		return returnBm;
	}

	@TargetApi(Build.VERSION_CODES.KITKAT)
	public static String getFilePathFromUri(final Context context, final Uri uri) {

		final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

		// DocumentProvider
		if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
			// ExternalStorageProvider
			if (isExternalStorageDocument(uri)) {

				final String docId = DocumentsContract.getDocumentId(uri);
				final String[] split = docId.split(":");
				final String type = split[0];

				if ("primary".equalsIgnoreCase(type)) {
					return Environment.getExternalStorageDirectory() + "/" + split[1];
				}
			}
			// DownloadsProvider
			else if (isDownloadsDocument(uri)) {

				final String id = DocumentsContract.getDocumentId(uri);
				final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),
						Long.valueOf(id));

				return getDataColumn(context, contentUri, null, null);
			}
			// MediaProvider
			else if (isMediaDocument(uri)) {
				final String docId = DocumentsContract.getDocumentId(uri);
				final String[] split = docId.split(":");
				final String type = split[0];

				Uri contentUri = null;
				if ("image".equals(type)) {
					contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
				} else if ("video".equals(type)) {
					contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
				} else if ("audio".equals(type)) {
					contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
				}

				final String selection = "_id=?";
				final String[] selectionArgs = new String[] { split[1] };

				return getDataColumn(context, contentUri, selection, selectionArgs);
			}
		}
		// MediaStore (and general)
		else if ("content".equalsIgnoreCase(uri.getScheme())) {
			return getDataColumn(context, uri, null, null);
		}
		// File
		else if ("file".equalsIgnoreCase(uri.getScheme())) {
			return uri.getPath();
		}

		return null;
	}

	/**
	 * Get the value of the data column for this Uri. This is useful for
	 * MediaStore Uris, and other file-based ContentProviders.
	 *
	 * @param context
	 *            The context.
	 * @param uri
	 *            The Uri to query.
	 * @param selection
	 *            (Optional) Filter used in the query.
	 * @param selectionArgs
	 *            (Optional) Selection arguments used in the query.
	 * @return The value of the _data column, which is typically a file path.
	 */
	public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

		Cursor cursor = null;
		final String column = "_data";
		final String[] projection = { column };

		try {

			cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
			if (cursor != null && cursor.moveToFirst()) {

				final int column_index = cursor.getColumnIndexOrThrow(column);
				return cursor.getString(column_index);
			}
		} finally {

			if (cursor != null) {
				cursor.close();
			}
		}
		return null;
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is ExternalStorageProvider.
	 */
	public static boolean isExternalStorageDocument(Uri uri) {
		return "com.android.externalstorage.documents".equals(uri.getAuthority());
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is DownloadsProvider.
	 */
	public static boolean isDownloadsDocument(Uri uri) {
		return "com.android.providers.downloads.documents".equals(uri.getAuthority());
	}

	/**
	 * @param uri
	 *            The Uri to check.
	 * @return Whether the Uri authority is MediaProvider.
	 */
	public static boolean isMediaDocument(Uri uri) {
		return "com.android.providers.media.documents".equals(uri.getAuthority());
	}

	/**
	 * Write the given bitmap into the given file. JPEG is used as the
	 * compression format with quality set to 100.
	 *
	 * @param bm
	 *            The bitmap.
	 * @param file
	 *            The file to write the bitmap into.
	 */
	public static void writeBitmapToFile(Bitmap bm, File file, int quality) throws IOException {

		FileOutputStream fos = new FileOutputStream(file);
		bm.compress(Bitmap.CompressFormat.JPEG, quality, fos);
		fos.flush();
		fos.close();
	}

	public static Bitmap addPadding(Bitmap bmp, int color) {

		if (bmp == null) {
			return null;
		}

		int biggerParam = Math.max(bmp.getWidth(), bmp.getHeight());
		Bitmap bitmap = Bitmap.createBitmap(biggerParam, biggerParam, bmp.getConfig());
		Canvas canvas = new Canvas(bitmap);
		canvas.drawColor(color);

		int top = bmp.getHeight() > bmp.getWidth() ? 0 : (bmp.getWidth() - bmp.getHeight()) / 2;
		int left = bmp.getWidth() > bmp.getHeight() ? 0 : (bmp.getHeight() - bmp.getWidth()) / 2;

		canvas.drawBitmap(bmp, left, top, null);
		return bitmap;
	}

	public static Bitmap rotateBitmap(Bitmap source, float angle) {
		Matrix matrix = new Matrix();
		matrix.postRotate(angle);
		return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
	}
}
